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SQLExprParser.java
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SQLExprParser.java
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/*
* Copyright 1999-2017 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.druid.sql.parser;
import com.alibaba.druid.DbType;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.*;
import com.alibaba.druid.sql.ast.expr.*;
import com.alibaba.druid.sql.ast.statement.*;
import com.alibaba.druid.sql.dialect.mysql.ast.expr.MySqlCharExpr;
import com.alibaba.druid.sql.dialect.mysql.parser.MySqlCreateTableParser;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleArgumentExpr;
import com.alibaba.druid.sql.dialect.postgresql.ast.expr.PGTypeCastExpr;
import com.alibaba.druid.sql.parser.Lexer.SavePoint;
import com.alibaba.druid.util.FnvHash;
import com.alibaba.druid.util.HexBin;
import com.alibaba.druid.util.MySqlUtils;
import com.alibaba.druid.util.StringUtils;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import static com.alibaba.druid.sql.parser.Token.CASCADE;
import static com.alibaba.druid.sql.parser.Token.NULL;
public class SQLExprParser extends SQLParser {
public static final String[] AGGREGATE_FUNCTIONS;
public static final long[] AGGREGATE_FUNCTIONS_CODES;
static {
String[] strings = {"AVG", "COUNT", "MAX", "MIN", "STDDEV", "SUM"};
AGGREGATE_FUNCTIONS_CODES = FnvHash.fnv1a_64_lower(strings, true);
AGGREGATE_FUNCTIONS = new String[AGGREGATE_FUNCTIONS_CODES.length];
for (String str : strings) {
long hash = FnvHash.fnv1a_64_lower(str);
int index = Arrays.binarySearch(AGGREGATE_FUNCTIONS_CODES, hash);
AGGREGATE_FUNCTIONS[index] = str;
}
}
protected String[] aggregateFunctions = AGGREGATE_FUNCTIONS;
protected long[] aggregateFunctionHashCodes = AGGREGATE_FUNCTIONS_CODES;
protected boolean allowIdentifierMethod = true;
public SQLExprParser(String sql) {
super(sql);
}
public SQLExprParser(String sql, DbType dbType, SQLParserFeature... features) {
super(sql, dbType, features);
}
public SQLExprParser(Lexer lexer) {
super(lexer);
}
public SQLExprParser(Lexer lexer, DbType dbType) {
super(lexer, dbType);
}
public void setAllowIdentifierMethod(boolean allowIdentifierMethod) {
this.allowIdentifierMethod = allowIdentifierMethod;
}
public SQLExpr expr() {
if (lexer.token == Token.STAR) {
lexer.nextToken();
SQLAllColumnExpr expr = new SQLAllColumnExpr();
if (lexer.token == Token.DOT) {
lexer.nextToken();
accept(Token.STAR);
return new SQLPropertyExpr(expr, "*");
}
if (lexer.token == Token.EXCEPT) {
lexer.nextToken();
accept(Token.LPAREN);
List<SQLExpr> except = new ArrayList<>();
this.exprList(except, expr);
expr.setExcept(except);
accept(Token.RPAREN);
}
return expr;
}
SQLExpr expr = primary();
Lexer.SavePoint mark = lexer.mark();
Token token = lexer.token;
if (token == Token.COMMA) {
return expr;
} else if (token == Token.EQ || token == Token.EQEQ) {
expr = relationalRest(expr);
expr = andRest(expr);
expr = xorRest(expr);
expr = orRest(expr);
return expr;
} if (token == Token.IN) {
lexer.nextToken();
if (lexer.token == Token.PARTITION) {
lexer.reset(mark);
return expr;
} else {
lexer.reset(mark);
return exprRest(expr);
}
} else {
return exprRest(expr);
}
}
public SQLExpr exprRest(SQLExpr expr) {
expr = bitXorRest(expr);
expr = multiplicativeRest(expr);
expr = additiveRest(expr);
expr = shiftRest(expr);
expr = bitAndRest(expr);
expr = bitOrRest(expr);
expr = inRest(expr);
expr = relationalRest(expr);
// expr = equalityRest(expr);
expr = andRest(expr);
expr = xorRest(expr);
expr = orRest(expr);
return expr;
}
public final SQLExpr bitXor() {
SQLExpr expr = primary();
return bitXorRest(expr);
}
public SQLExpr bitXorRest(SQLExpr expr) {
Token token = lexer.token;
switch (token) {
case CARET: {
lexer.nextToken();
SQLBinaryOperator op;
if (lexer.token == Token.EQ) {
lexer.nextToken();
op = SQLBinaryOperator.BitwiseXorEQ;
} else {
op = SQLBinaryOperator.BitwiseXor;
}
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, op, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case SUBGT: {
lexer.nextToken();
SQLExpr rightExp;
if (dbType == DbType.mysql) {
if (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.LITERAL_ALIAS) {
rightExp = primary();
} else {
rightExp = expr();
}
} else {
rightExp = primary();
}
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGt, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case LT_SUB_GT: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PG_ST_DISTANCE, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case SUBGTGT: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGtGt, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case POUNDGT: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGt, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case POUNDGTGT: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGtGt, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case QUESQUES: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesQues, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case QUESBAR: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesBar, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case QUESQUESBAR: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesQuesBar, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
case QUESAMP: {
lexer.nextToken();
SQLExpr rightExp = primary();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesAmp, rightExp, dbType);
expr = bitXorRest(expr);
break;
}
default:
break;
}
return expr;
}
public final SQLExpr multiplicative() {
SQLExpr expr = bitXor();
return multiplicativeRest(expr);
}
public SQLExpr multiplicativeRest(SQLExpr expr) {
final Token token = lexer.token;
if (token == Token.STAR) {
lexer.nextToken();
SQLExpr rightExp = bitXor();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.Multiply, rightExp, getDbType());
expr = multiplicativeRest(expr);
} else if (token == Token.SLASH) {
lexer.nextToken();
SQLExpr rightExp = bitXor();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.Divide, rightExp, getDbType());
expr = multiplicativeRest(expr);
} else if (token == Token.PERCENT) {
lexer.nextToken();
SQLExpr rightExp = bitXor();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.Modulus, rightExp, getDbType());
expr = multiplicativeRest(expr);
} else if (token == Token.DIV) {
lexer.nextToken();
SQLExpr rightExp = bitXor();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.DIV, rightExp, getDbType());
expr = multiplicativeRest(expr);
} else if (lexer.identifierEquals(FnvHash.Constants.MOD) || lexer.token == Token.MOD) {
Lexer.SavePoint savePoint = lexer.mark();
lexer.nextToken();
if (lexer.token == Token.COMMA
|| lexer.token == Token.EOF
|| lexer.token == Token.ON
|| lexer.token == Token.WHERE
|| lexer.token == Token.RPAREN) {
lexer.reset(savePoint);
return expr;
}
SQLExpr rightExp = bitXor();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.Modulus, rightExp, dbType);
expr = multiplicativeRest(expr);
} else if (token == Token.LITERAL_INT && lexer.isNegativeIntegerValue()) {
Number number = lexer.integerValue();
if (number instanceof Integer) {
number = -number.intValue();
} else if (number instanceof Long) {
number = -number.longValue();
} else if (number instanceof BigInteger) {
number = ((BigInteger) number).abs();
} else {
throw new ParserException("not support value : " + number + ", " + lexer.info());
}
SQLIntegerExpr rightExp = new SQLIntegerExpr(number);
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.Subtract, rightExp, dbType);
lexer.nextToken();
expr = multiplicativeRest(expr);
}
return expr;
}
public SQLIntegerExpr integerExpr() {
SQLIntegerExpr intExpr = null;
if (lexer.token() == Token.SUB) {
lexer.nextToken();
intExpr = new SQLIntegerExpr(lexer.integerValue().longValue() * -1);
} else {
intExpr = new SQLIntegerExpr(lexer.integerValue());
}
accept(Token.LITERAL_INT);
return intExpr;
}
public SQLCharExpr charExpr() {
SQLCharExpr charExpr = new SQLCharExpr(lexer.stringVal());
accept(Token.LITERAL_CHARS);
return charExpr;
}
public int parseIntValue() {
if (lexer.token == Token.LITERAL_INT) {
Number number = this.lexer.integerValue();
int intVal = ((Integer) number).intValue();
lexer.nextToken();
return intVal;
} else {
throw new ParserException("not int. " + lexer.info());
}
}
public SQLExpr primary() {
List<String> beforeComments = null;
if (lexer.isKeepComments() && lexer.hasComment()) {
beforeComments = lexer.readAndResetComments();
}
SQLExpr sqlExpr = null;
final Token tok = lexer.token;
switch (tok) {
case LPAREN:
int paranCount = 0;
lexer.nextToken();
if (lexer.token == Token.RPAREN) {
lexer.nextToken();
sqlExpr = new SQLMethodInvokeExpr();
break;
}
sqlExpr = expr();
if (lexer.token == Token.COMMA) {
SQLListExpr listExpr = new SQLListExpr();
listExpr.addItem(sqlExpr);
do {
lexer.nextToken();
listExpr.addItem(expr());
} while (lexer.token == Token.COMMA);
sqlExpr = listExpr;
}
if (sqlExpr instanceof SQLBinaryOpExpr) {
((SQLBinaryOpExpr) sqlExpr).setParenthesized(true);
}
if ((lexer.token == Token.UNION || lexer.token == Token.MINUS || lexer.token == Token.EXCEPT)
&& sqlExpr instanceof SQLQueryExpr) {
SQLQueryExpr queryExpr = (SQLQueryExpr) sqlExpr;
SQLSelectQuery query = this.createSelectParser().queryRest(queryExpr.getSubQuery().getQuery(), true);
queryExpr.getSubQuery().setQuery(query);
}
accept(Token.RPAREN);
break;
case INSERT:
lexer.nextToken();
if (lexer.token != Token.LPAREN) {
throw new ParserException("syntax error. " + lexer.info());
}
sqlExpr = new SQLIdentifierExpr("INSERT");
break;
case IDENTIFIER:
String ident = lexer.stringVal();
long hash_lower = lexer.hashLCase();
int sourceLine = -1, sourceColumn = -1;
if (lexer.keepSourceLocation) {
lexer.computeRowAndColumn();
sourceLine = lexer.posLine;
sourceColumn = lexer.posColumn;
}
lexer.nextToken();
if (hash_lower == FnvHash.Constants.TRY_CAST) {
accept(Token.LPAREN);
SQLCastExpr cast = new SQLCastExpr();
cast.setTry(true);
cast.setExpr(expr());
accept(Token.AS);
cast.setDataType(parseDataType(false));
accept(Token.RPAREN);
sqlExpr = cast;
} else if (hash_lower == FnvHash.Constants.DATE
&& (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.VARIANT)
&& (SQLDateExpr.isSupport(dbType))) {
String literal = lexer.token == Token.LITERAL_CHARS ? lexer.stringVal() : "?";
lexer.nextToken();
SQLDateExpr dateExpr = new SQLDateExpr();
dateExpr.setLiteral(literal);
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.TIMESTAMP
&& (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.VARIANT)
&& DbType.oracle != dbType) {
SQLTimestampExpr dateExpr = new SQLTimestampExpr(lexer.stringVal());
lexer.nextToken();
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.TIME
&& (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.VARIANT)) {
SQLTimeExpr dateExpr = new SQLTimeExpr(lexer.stringVal());
lexer.nextToken();
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.TIME && lexer.token == Token.LITERAL_ALIAS) {
SQLTimeExpr dateExpr = new SQLTimeExpr(SQLUtils.normalize(lexer.stringVal()));
lexer.nextToken();
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.DATETIME
&& (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.VARIANT)) {
SQLDateTimeExpr dateExpr = new SQLDateTimeExpr(lexer.stringVal());
lexer.nextToken();
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.DATETIME && lexer.token == Token.LITERAL_ALIAS) {
SQLDateTimeExpr dateExpr = new SQLDateTimeExpr(SQLUtils.normalize(lexer.stringVal()));
lexer.nextToken();
sqlExpr = dateExpr;
} else if (hash_lower == FnvHash.Constants.BOOLEAN && lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLBooleanExpr(Boolean.valueOf(lexer.stringVal()));
lexer.nextToken();
} else if (hash_lower == FnvHash.Constants.VARCHAR && lexer.token == Token.LITERAL_CHARS) {
if (dbType == DbType.mysql) {
MySqlCharExpr mysqlChar = new MySqlCharExpr(lexer.stringVal());
mysqlChar.setType("VARCHAR");
sqlExpr = mysqlChar;
} else {
sqlExpr = new SQLCharExpr(lexer.stringVal());
}
lexer.nextToken();
} else if (hash_lower == FnvHash.Constants.CHAR && lexer.token == Token.LITERAL_CHARS) {
if (dbType == DbType.mysql) {
MySqlCharExpr mysqlChar = new MySqlCharExpr(lexer.stringVal());
mysqlChar.setType("CHAR");
sqlExpr = mysqlChar;
} else {
sqlExpr = new SQLCharExpr(lexer.stringVal());
}
lexer.nextToken();
} else if (DbType.mysql == dbType && ident.startsWith("0x") && (ident.length() % 2) == 0) {
sqlExpr = new SQLHexExpr(ident.substring(2));
} else if (DbType.mysql == dbType
&& hash_lower == FnvHash.Constants.JSON
&& lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLJSONExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType
&& hash_lower == FnvHash.Constants.DECIMAL
&& lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLDecimalExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType
&& hash_lower == FnvHash.Constants.DOUBLE
&& lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLDoubleExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType
&& hash_lower == FnvHash.Constants.FLOAT
&& lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLFloatExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType && hash_lower == FnvHash.Constants.SMALLINT
&& lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLSmallIntExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType && hash_lower == FnvHash.Constants.TINYINT && lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLTinyIntExpr(lexer.stringVal());
lexer.nextToken();
} else if (DbType.mysql == dbType && hash_lower == FnvHash.Constants.BIGINT && lexer.token == Token.LITERAL_CHARS) {
String strVal = lexer.stringVal();
if (strVal.startsWith("--")) {
strVal = strVal.substring(2);
}
sqlExpr = new SQLBigIntExpr(strVal);
lexer.nextToken();
} else if (DbType.mysql == dbType && hash_lower == FnvHash.Constants.INTEGER && lexer.token == Token.LITERAL_CHARS) {
String strVal = lexer.stringVal();
if (strVal.startsWith("--")) {
strVal = strVal.substring(2);
}
SQLIntegerExpr integerExpr = SQLIntegerExpr.ofIntOrLong(Long.parseLong(strVal));
integerExpr.setType("INTEGER");
sqlExpr = integerExpr;
lexer.nextToken();
} else if (DbType.mysql == dbType && hash_lower == FnvHash.Constants.REAL && lexer.token == Token.LITERAL_CHARS) {
sqlExpr = new SQLRealExpr(lexer.stringVal());
lexer.nextToken();
} else if (hash_lower == FnvHash.Constants.DATE && lexer.token == Token.LITERAL_ALIAS) {
sqlExpr = new SQLDateExpr(lexer.stringVal());
lexer.nextToken();
} else if (hash_lower == FnvHash.Constants.DATETIME && lexer.token == Token.LITERAL_ALIAS) {
sqlExpr = new SQLDateTimeExpr(lexer.stringVal());
lexer.nextToken();
} else if (hash_lower == FnvHash.Constants.TIMESTAMP && lexer.token == Token.LITERAL_ALIAS) {
sqlExpr = new SQLTimestampExpr(lexer.stringVal());
lexer.nextToken();
} else {
char c0 = ident.charAt(0);
if (c0 == '`' || c0 == '[' || c0 == '"') {
if (lexer.isEnabled(SQLParserFeature.IgnoreNameQuotes)) {
ident = ident.substring(1, ident.length() - 1);
}
hash_lower = FnvHash.hashCode64(ident);
}
SQLIdentifierExpr identifierExpr = new SQLIdentifierExpr(ident, hash_lower);
if (sourceLine != -1) {
identifierExpr.setSourceLine(sourceLine);
identifierExpr.setSourceColumn(sourceColumn);
}
sqlExpr = identifierExpr;
}
break;
case NEW:
throw new ParserException("TODO " + lexer.info());
case LITERAL_INT:
Number number = lexer.integerValue();
lexer.nextToken();
if (lexer.identifierEquals(FnvHash.Constants.BD)) {
SQLDecimalExpr decimalExpr = new SQLDecimalExpr();
decimalExpr.setValue(new BigDecimal(number.intValue()));
lexer.nextToken();
sqlExpr = decimalExpr;
} else {
sqlExpr = new SQLIntegerExpr(number);
}
break;
case LITERAL_FLOAT:
sqlExpr = lexer.numberExpr();
lexer.nextToken();
if (lexer.identifierEquals(FnvHash.Constants.BD)) {
SQLDecimalExpr decimalExpr = new SQLDecimalExpr();
decimalExpr.setValue(new BigDecimal(sqlExpr.toString()));
lexer.nextToken();
sqlExpr = decimalExpr;
}
break;
case LITERAL_CHARS: {
sqlExpr = new SQLCharExpr(lexer.stringVal());
if (DbType.mysql == dbType) {
lexer.nextTokenValue();
for (; ; ) {
if (lexer.token == Token.LITERAL_ALIAS) {
String concat = ((SQLCharExpr) sqlExpr).getText();
concat += lexer.stringVal();
lexer.nextTokenValue();
sqlExpr = new SQLCharExpr(concat);
} else if (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.LITERAL_NCHARS) {
String concat = ((SQLCharExpr) sqlExpr).getText();
concat += lexer.stringVal();
lexer.nextTokenValue();
sqlExpr = new SQLCharExpr(concat);
} else {
break;
}
}
} else {
lexer.nextToken();
}
break;
}
case LITERAL_NCHARS:
sqlExpr = new SQLNCharExpr(lexer.stringVal());
lexer.nextToken();
if (DbType.mysql == dbType) {
SQLMethodInvokeExpr concat = null;
for (; ; ) {
if (lexer.token == Token.LITERAL_ALIAS) {
if (concat == null) {
concat = new SQLMethodInvokeExpr("CONCAT");
concat.addArgument(sqlExpr);
sqlExpr = concat;
}
String alias = lexer.stringVal();
lexer.nextToken();
SQLCharExpr concat_right = new SQLCharExpr(alias.substring(1, alias.length() - 1));
concat.addArgument(concat_right);
} else if (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.LITERAL_NCHARS) {
if (concat == null) {
concat = new SQLMethodInvokeExpr("CONCAT");
concat.addArgument(sqlExpr);
sqlExpr = concat;
}
String chars = lexer.stringVal();
lexer.nextToken();
SQLCharExpr concat_right = new SQLCharExpr(chars);
concat.addArgument(concat_right);
} else {
break;
}
}
}
break;
case VARIANT: {
String varName = lexer.stringVal();
lexer.nextToken();
if (varName.equals(":") && lexer.token == Token.IDENTIFIER && DbType.oracle == dbType) {
String part2 = lexer.stringVal();
lexer.nextToken();
varName += part2;
}
SQLVariantRefExpr varRefExpr = new SQLVariantRefExpr(varName);
if (varName.startsWith(":")) {
varRefExpr.setIndex(lexer.nextVarIndex());
}
if (varRefExpr.getName().equals("@")
&& (lexer.token == Token.LITERAL_CHARS || (lexer.token == Token.VARIANT && lexer.stringVal().startsWith("@")))) {
varRefExpr.setName("@'" + lexer.stringVal() + "'");
lexer.nextToken();
} else if (varRefExpr.getName().equals("@@") && lexer.token == Token.LITERAL_CHARS) {
varRefExpr.setName("@@'" + lexer.stringVal() + "'");
lexer.nextToken();
}
sqlExpr = varRefExpr;
}
break;
case DEFAULT:
if (dbType == DbType.clickhouse) {
sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
} else {
sqlExpr = new SQLDefaultExpr();
}
lexer.nextToken();
break;
case DUAL:
case KEY:
// case DISTINCT:
case LIMIT:
case SCHEMA:
case COLUMN:
case IF:
case END:
case COMMENT:
case COMPUTE:
case ENABLE:
case DISABLE:
case INITIALLY:
case SEQUENCE:
case USER:
case EXPLAIN:
case WITH:
case GRANT:
case REPLACE:
case INDEX:
// case MODEL:
case PCTFREE:
case INITRANS:
case MAXTRANS:
case SEGMENT:
case CREATION:
case IMMEDIATE:
case DEFERRED:
case STORAGE:
case NEXT:
case MINEXTENTS:
case MAXEXTENTS:
case MAXSIZE:
case PCTINCREASE:
case FLASH_CACHE:
case CELL_FLASH_CACHE:
case NONE:
case LOB:
case STORE:
case ROW:
case CHUNK:
case CACHE:
case NOCACHE:
case LOGGING:
case NOCOMPRESS:
case KEEP_DUPLICATES:
case EXCEPTIONS:
case PURGE:
case FULL:
case TO:
case IDENTIFIED:
case PASSWORD:
case BINARY:
case WINDOW:
case OFFSET:
case SHARE:
case START:
case CONNECT:
case MATCHED:
case ERRORS:
case REJECT:
case UNLIMITED:
case BEGIN:
case EXCLUSIVE:
case MODE:
case ADVISE:
case VIEW:
case ESCAPE:
case OVER:
case ORDER:
case CONSTRAINT:
case TYPE:
case OPEN:
case REPEAT:
case TABLE:
case TRUNCATE:
case EXCEPTION:
case FUNCTION:
case IDENTITY:
case EXTRACT:
case DESC:
case DO:
case GROUP:
case MOD:
case CONCAT:
case PRIMARY:
case PARTITION:
case LEAVE:
case CLOSE:
case CONDITION:
case OUT:
case USE:
case EXCEPT:
case INTERSECT:
case MERGE:
case MINUS:
case UNTIL:
case TOP:
case SHOW:
case INOUT:
case OUTER:
case QUALIFY:
sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
lexer.nextToken();
break;
case CASE:
SQLCaseExpr caseExpr = new SQLCaseExpr();
lexer.nextToken();
if (lexer.token != Token.WHEN) {
caseExpr.setValueExpr(expr());
}
accept(Token.WHEN);
SQLExpr testExpr = expr();
accept(Token.THEN);
SQLExpr valueExpr = expr();
SQLCaseExpr.Item caseItem = new SQLCaseExpr.Item(testExpr, valueExpr);
caseExpr.addItem(caseItem);
while (lexer.token == Token.WHEN) {
lexer.nextToken();
testExpr = expr();
accept(Token.THEN);
valueExpr = expr();
caseItem = new SQLCaseExpr.Item(testExpr, valueExpr);
caseExpr.addItem(caseItem);
}
if (lexer.token == Token.ELSE) {
lexer.nextToken();
caseExpr.setElseExpr(expr());
}
accept(Token.END);
sqlExpr = caseExpr;
break;
case EXISTS: {
String strVal = lexer.stringVal();
lexer.nextToken();
switch (lexer.token) {
case COMMA:
case DOT:
sqlExpr = new SQLIdentifierExpr(strVal);
break;
default:
accept(Token.LPAREN);
sqlExpr = new SQLExistsExpr(createSelectParser().select());
accept(Token.RPAREN);
parseQueryPlanHint(sqlExpr);
break;
}
break;
}
case NOT:
lexer.nextToken();
if (lexer.token == Token.EXISTS) {
lexer.nextToken();
accept(Token.LPAREN);
SQLExistsExpr exists = new SQLExistsExpr(createSelectParser().select(), true);
accept(Token.RPAREN);
parseQueryPlanHint(exists);
if (lexer.token == Token.EQ) {
exists.setNot(false);
SQLExpr relational = this.relationalRest(exists);
sqlExpr = new SQLNotExpr(relational);
} else {
sqlExpr = exists;
}
} else if (lexer.token == Token.LPAREN) {
lexer.nextToken();
SQLExpr notTarget = expr();
accept(Token.RPAREN);
notTarget = bitXorRest(notTarget);
notTarget = multiplicativeRest(notTarget);
notTarget = additiveRest(notTarget);
notTarget = shiftRest(notTarget);
notTarget = bitAndRest(notTarget);
notTarget = bitOrRest(notTarget);
notTarget = inRest(notTarget);
notTarget = relationalRest(notTarget);
sqlExpr = new SQLNotExpr(notTarget);
parseQueryPlanHint(sqlExpr);
return primaryRest(sqlExpr);
} else {
SQLExpr restExpr = relational();
sqlExpr = new SQLNotExpr(restExpr);
parseQueryPlanHint(sqlExpr);
}
break;
case FROM:
case SELECT:
SQLQueryExpr queryExpr = new SQLQueryExpr(
createSelectParser()
.select());
sqlExpr = queryExpr;
break;
case CAST:
String castStr = lexer.stringVal();
lexer.nextToken();
if (lexer.token != Token.LPAREN) {
sqlExpr = new SQLIdentifierExpr(castStr);
} else {
lexer.nextToken();
SQLCastExpr cast = new SQLCastExpr();
cast.setExpr(
expr());
accept(Token.AS);
cast.setDataType(
parseDataType(false));
accept(Token.RPAREN);
sqlExpr = cast;
}
break;
case SUB:
lexer.nextToken();
switch (lexer.token) {
case LITERAL_INT:
Number integerValue = lexer.integerValue();
if (integerValue instanceof Integer) {
int intVal = integerValue.intValue();
if (intVal == Integer.MIN_VALUE) {
integerValue = Long.valueOf(((long) intVal) * -1);
} else {
integerValue = Integer.valueOf(intVal * -1);
}
} else if (integerValue instanceof Long) {
long longVal = ((Long) integerValue).longValue();
if (longVal == 2147483648L) {
integerValue = Integer.valueOf((int) (((long) longVal) * -1));
} else {
integerValue = Long.valueOf(longVal * -1);
}
} else {
integerValue = ((BigInteger) integerValue).negate();
}
sqlExpr = new SQLIntegerExpr(integerValue);
lexer.nextToken();
break;
case LITERAL_FLOAT:
sqlExpr = lexer.numberExpr(true);
lexer.nextToken();
break;
case LITERAL_CHARS:
case LITERAL_ALIAS:
if (dbType == DbType.mysql) {
sqlExpr = new SQLCharExpr(lexer.stringVal());
} else {
sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
}
lexer.nextToken();
if (lexer.token == Token.LPAREN
|| lexer.token == Token.LBRACKET
|| lexer.token == Token.DOT) {
sqlExpr = primaryRest(sqlExpr);
}
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Negative, sqlExpr);
break;
case QUES: {
SQLVariantRefExpr variantRefExpr = new SQLVariantRefExpr("?");
variantRefExpr.setIndex(lexer.nextVarIndex());
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Negative, variantRefExpr);
lexer.nextToken();
break;
}
case PLUS:
case SUB:
case LPAREN:
case IDENTIFIER:
case BANG:
case CASE:
case CAST:
case NULL:
case INTERVAL:
case LBRACE:
case IF:
case CHECK:
case INDEX:
case PRIMARY:
case KEY:
case REPLACE:
sqlExpr = primary();
while (lexer.token == Token.HINT) {
lexer.nextToken();
}
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Negative, sqlExpr);
break;
case VARIANT:
sqlExpr = primary();
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Negative, sqlExpr);
break;
default:
throw new ParserException("TODO : " + lexer.info());
}
break;
case PLUS:
lexer.nextToken();
switch (lexer.token) {
case LITERAL_CHARS:
case LITERAL_ALIAS:
sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Plus, sqlExpr);
lexer.nextToken();
break;
case QUES: {
SQLVariantRefExpr variantRefExpr = new SQLVariantRefExpr("?");
variantRefExpr.setIndex(lexer.nextVarIndex());
sqlExpr = new SQLUnaryExpr(SQLUnaryOperator.Plus, variantRefExpr);
lexer.nextToken();
break;
}
case PLUS:
case SUB:
case LITERAL_FLOAT:
case LITERAL_INT:
case LPAREN:
case IDENTIFIER: